Culvert pipe molds are specialized forming tools for manufacturing concrete or reinforced concrete culverts. Featuring standardized designs and high-strength structures, they ensure dimensional accuracy, compressive strength, and sealing performance. Classified into centrifugal molds (for high-speed rotational compaction) and vertical vibration molds (for large-diameter culverts), these molds are widely used in transportation culverts, municipal drainage, hydraulic engineering, and utility tunnels to meet large-diameter, high-load engineering requirements.

Usage

Produces large-diameter concrete culverts (inner diameter ≥800mm), including circular, elliptical, and box culverts for drainage systems, underground pipeline protection, and culvert passages.

Suitable for high-pressure scenarios (e.g., road underpasses, river diversion) with structural stability and impermeability.

Application Fields

Transportation Infrastructure

Highway culverts, railway box culverts, subway tunnel linings.

Municipal Engineering

Stormwater / sewage mains, flood control channels, utility tunnels.

Hydropower

Reservoir diversion culverts, irrigation tunnels, river rehabilitation.

Energy

Nuclear plant cooling conduits, oil/gas pipeline casings.

Technical

Parameter	Specification Range	Explain
Inner Diameter	800mm–4000mm	Customizable (e.g., Φ4000mm jacking culverts)
Length	2m–6m	Standard 3m/4m; modular extensions available
Wall Thickness	80mm–500mm	Load-classified design (standard: 150-300mm)
Joint Type	Socket / Flanged / Plain	Compatible with rubber gaskets or expansive cement

Material Specifications

Component	Material	Characteristic
Mold Body	Q345B Low-Alloy Steel	Yield strength ≥345MPa; 120μm hot-dip galvanized coating
End Plate	45# Steel	Induction-hardened (HRC45-50); wear-resistant
Reinforcement	Hot-rolled H-Beam	cross-section; enhanced rigidity
Seals	EPDM Rubber	Aging-resistant (-50℃~120℃); IP67-rated sealing

Technical Parameters

Parameter Item	Technical Indicators	Remarks
Production Rate	Centrifugal: 8-15/day Vertical: 5-10/day	Size / process-dependent
Demolding Cycles	≥500 cycles	Chromium-plated components (8-10 years)
Compressive Strength	≥30MPa (culvert)	C35-C50 concrete; flexural strength ≥5.5MPa
Impermeability	P10-P12	Joint hydrostatic test ≥1.2MPa
Tolerance	Inner dia. ±2mm; Wall ±3mm	3D CMM-calibrated; CNC precision
Equipment	Centrifuge (500-1000rpm) / Vibrator	55kW-110kW motor compatibility